Tone Generator

Online audio frequency generator for creating sine waves, test tones, and various waveforms. Perfect for audio testing, speaker calibration, and frequency analysis.

⚠️ Volume Warning: Please start with low volume and use caution. High frequencies or loud volumes can potentially damage hearing. Use headphones or speakers at safe levels.
440 Hz
Stopped

Frequency Control

🔇 🔊 30%

Current Frequency Information

How to Use the Tone Generator

  1. Set Frequency: Use the slider or input field to set your desired frequency between 20 Hz and 20 kHz.
  2. Choose Waveform: Select from sine, square, triangle, or sawtooth waveforms using the buttons.
  3. Adjust Volume: Set the volume to a safe level before playing the tone.
  4. Play Tone: Click the play button to generate the tone, and click stop to end playback.
  5. Use Presets: Click preset buttons for common test frequencies.

Waveform Types

  • Sine Wave: Pure tone with a single frequency, most natural sounding
  • Square Wave: Rich in odd harmonics, creates a hollow sound
  • Triangle Wave: Contains odd harmonics but softer than square wave
  • Sawtooth Wave: Contains all harmonics, creates a bright, buzzy sound

Common Test Frequencies

  • 20-60 Hz: Sub-bass frequencies, felt more than heard
  • 60-250 Hz: Bass frequencies, foundation of music
  • 250-2000 Hz: Mid-range frequencies, human voice range
  • 2000-8000 Hz: High-mid frequencies, clarity and presence
  • 8000-20000 Hz: High frequencies, brightness and air
  • 440 Hz: Musical note A4, standard tuning reference
  • 1000 Hz: Common test tone for audio equipment

Use Cases

  • Audio Testing: Test speakers, headphones, and audio equipment
  • Hearing Tests: Check hearing range and sensitivity (use with caution)
  • Speaker Calibration: Adjust audio system frequency response
  • Music Production: Reference tones for tuning and mixing
  • Acoustic Analysis: Measure room acoustics and frequency response
  • Tinnitus Matching: Identify tinnitus frequency (consult healthcare professional)

Safety Guidelines

  • Always start with low volume and gradually increase
  • Take breaks during extended listening sessions
  • Be especially careful with high frequencies above 10 kHz
  • Stop immediately if you experience discomfort
  • Consult a healthcare professional for hearing concerns
  • Use quality headphones or speakers for accurate reproduction

Frequently Asked Questions

What frequencies can the tone generator produce?
The tone generator can produce frequencies from 20 Hz to 20,000 Hz (20 kHz), covering the full range of human hearing. You can set precise frequencies using the slider or input field.
What waveform types are available?
The generator supports four waveform types: sine (pure tone), square (hollow sound), triangle (soft), and sawtooth (bright/buzzy). Each has different harmonic characteristics.
Is the tone generator safe to use?
Yes, but please use caution with volume levels. Start with low volume and gradually increase. Very high frequencies or volumes can potentially damage hearing. Stop if you experience any discomfort.
Why can't I hear certain frequencies?
Human hearing typically ranges from 20 Hz to 20 kHz, but this varies by age and individual. High frequencies above 15 kHz may not be audible to all users, especially older adults.
What is 440 Hz used for?
440 Hz is the musical note A4 and serves as the standard tuning reference for musical instruments. It's commonly used in music and audio applications.
Can I use this for hearing tests?
While you can test your hearing range, this tool is not a substitute for professional audiometry. For medical hearing concerns, please consult a healthcare professional.
Does this work on mobile devices?
Yes, the tone generator works on mobile devices that support the Web Audio API. However, audio quality may vary depending on your device's speakers or headphones.
Is this tool free to use?
Yes, our tone generator is completely free to use. You can generate unlimited tones and access all features without any cost or registration.